Highway construction of bridge expansion joints joints joints require editing requirements in parallel, perpendicular to the axis of the bridge in both directions, can freely scalable, secure and reliable vehicle should be smooth too, no sudden jump and noise; to be able to prevent rainwater and Garbage soil infiltration obstruction; installation, inspection, maintenance, eliminating the dirt to be simple and easy to use. Set expansion joints, railings and the bridge deck to be disconnected. Models of a highway bridge expansion joints) Modular: GQF-C type, GQF-Z type, GQF-L type, GQF-F type, GQF-MAL; 2) comb-type expansion joints SCB, SSFB; 3) TST elastomer telescopic device; 3 highway bridge expansion joints of the technical requirements adopted editors 1. Neoprene rubber (ie, CR, suitable for temperatures at -25 ℃ - + 60 ℃ area) or the use of natural rubber (ie, NR, suitable temperature -40 ℃ -. + 60 ℃ region) 2 steel telescopic device used, the quality requirements in line with GB012, GB374 regulations, and shaped steel used (ie 16MN or Q345) comply with JT / T1591 highway bridge expansion joints GQF. -C-type bridge expansion GQF-C-type bridge expansion is an adaptation of a new highway bridge construction bridge expansion joint device. GQF-C-type bridge expansion with the overall hot-rolled special steel 16Mn overcome extrusion shaped steel straight and set the size of the non-uniform features, GQF-C-type bridge expansion comprehensive technical performance and technical indicators have reached or exceeded the international advanced level, structure type and shaped steel rolling are a national initiative, will become the industry standard for traffic Recommended Products highway bridge expansion joints GQF-C-type bridge expansion Features: building height is low, the overall shape of the domestic hot-rolled shaped steel height of only 50mm, simple structure, easy installation, with significant reliability, comfort and durability. suitable for deck pavement layer thickness equal to or greater than 80mm, stretching the amount of 80mm or less all kinds of bridges, which is convenient to replace the old bridge expansion, but also for the construction of a new bridge selection .GQF-C-type bridge expansion intermediate rubber seal technical requirements: the use of chloroprene rubber (CR) and the temperature of the sealing telescopic device is suitable for rubber bands -25 ℃ - + 60 ℃ areas with natural rubber (NR) device with a rubber seal for temperature of -40 ℃ - + 60 ℃ areas. 

palabras clave: Expansion joints, bridge expansion joints, highway bridge expansion joints,